Packing for rods and the like



Sept. 29, 1931. G. R. LIVERGOOD 1,325,004

PACKING FOR RODS AND THE LIKE Filed July 29. 1925 Patented Sept. 29, 1931 unseen entree: PA ENT orrrc s GERA D LivEne'oonQ; or seesaw, TEXAS, teamma e ONE-FOURTH TO w. L. rnertsomor HARRIS COUNTY, TEXAS; MARIE E. LIvERGooD ADMINISTBATBIX or GERALD, :a. Lrvnaeoon; DECEASED PACKING son-sons AND THE LIKE Application filed July 29,

inventionrelates to a metallic packing for use in preserving a fluid t'ight closure;

around'the-movingpartv It is'an object of the lnvention to pro-- about a rod or shaft so as to preventlleakage vide a packing that will withstandhigh presableto withstand heat, whennecessary, and

to be automatically adjustable tov take up for wear. .The objects alsolinclude the making of the packingin units orsections, adapted to be placed: at intervals along thev rod, wherever 'desired. 1 1 e The invention includes. the particular con struction and arrangement of. parts which. will be hereafter more particularly described and set forth. f a

-Referring to the: drawingsherewith'for a more particular description" of the invention, Fig. 1 is a central longitudinal section through a packing device embodyingmyim vention, therod or shaft being shown in elevation. Fig. 2 is a top. plan view of the sectional packing ring. Fig. 3 is aside elevation thereof. Fig. 4 is a side elevationJof a slightly different embodiment of the packing ring. Fig. 5 is a side view partly in in section of the ring employed to hold the sections of the ring in position,- and Fig. 6 is a bottom plan view of the ring shown in Fig. 5. Like numerals of reference are employed to designate like parts in all the views.

The packing which I have devised maybe employed to preserve a fluid-tight closure about any type of moving rodor shaft. It is also designed to be used in pumping to preserve the fit between the working barrel and the plunger of the pump; In the drawing, I have shown the shaft or plunger 1 which it is understood may be a solid or tubular member, as occasion arises. The rod in within the packing. The barrel 2 is packed this device is intended for reciprocation Iss5. Serial are. 46,830.

4'. This seat is formed by the gradual thickening of'the. walls of the sleeve to a point spacedsomewhat from the moving member, the interior face 5 below the seat being cylindrical and adapted to allow the passage of fluid. The upper end'of the sleeve 3 is con- ZlQCtGd \Vllll1;tll6 barrel 2 by means of a cou-. pling 6. This is threaded internally at its upperend; for engagement with the barrel 2,. and the lower end' is reduced in external diameter and-threaded for, engagement with the upper end ofthe sleeve 3', as shown in the drawing." The threaded portion 7 at the upper} end of the sleeve is of suficient length to allow the screwingt-herein below the couplurality of sections, and I have-shown four such sections. In; Figs. 2 ends, the line of division betweenthe sections is offset between the upper and lower ends of the ring to'provide a horizontal portion. 11, the faces of which areslidable upon each other but which prevent thepassage of fluid vertically past the ringi The ring is provided midway of its ends with Ea groove or channel; l2to receive an auxiliary sectional ring. '13. Said ring 13 fits within said groove and istapered on' its outerface' to conformto the taper of the ring. 9. 'Itis also, divided into sections'butis placed upon the-ring 9 sothat the division line between the sections will be offset,or staggeredprelative to the division lines between the sections of; theringQ'; This will assist. therefore, in preventing the passage of fiuid past the ring. l 1

The sections ofthe ring are adapteditobe held against relative circumferential' move-- ment by meansoof a ring23wliieh i will call the radiusaringz The' ring .9-has on its up"- per face teeth, or lugs; 14 ;:oneon' eachxot the four sections voftjliering. The ring 23 has adownwardly extending. bossl5 whichshas spaced recesses or grooves- 1h; there-in to .re-

ceive the teeth 14 upon the ring 9. The recesses l6 allow free radial movement of the sections of the ring 9 toward, or away, from the moving member 1, but serve to prevent relative movement of the sections in a lateral direction. In this way,.the sections of the ring 9, which may be spaced slightly apart, will be held n uniformly spaced relation as is desirable.

The ring 9 may be cut lon itudinally into sections by a double offset line, as shown in F 4, that is, the line or division between the adjacent sections will be oii set laterally at 17, and then vertically at 1-8, and horizontally again at 19. This provides two points of sliding fit between the sections .at 17 and 19, which will effectively prevent the passage of fluid longitudinally inthe ring, and when the ring is'tnus divided, the auxiliary ring 2. may be omitted, as shown.

it will effectively seal the space about the roving member 1, I provide a spring 20, the upper end of which bears against the ring 8 and the lower end of which bears against the ri 1 The spring is under compression and hence holds the packing ring 9 resiliently in its seat at all time. The tension upon the spring be Varied through the adjust mont t the ring 8 in an obvious manner. v

The packing of this nature may be arranged in units so that any desired number of packing rings may be employed. InFig.

I-have shown but two of these units, although it is to be understood that one, or several of these rings may be used,as desired, and as found necessary under the particular conditions in whichthe packing is used. In the drawings, I have shown the lower section 3, having its lower end below the seat i, as being threaded internally at 21 to engage with the end of the adjacent section of the barrel 2. v

The packing constructed in the manner described is obviously easy to install and to remove or repair, as occasion may require. It may be made entirely of metal and resistant to heat and wear. The manner inwhich the packing rings are made sectional allows them to expand or contract about the moving member, andthe use of the radius ring 13 holds the sections in proper position, so that the expansion and contraction will be uniform and even. The packing will thus serve its purpose of sealing the space outside the moving member for long periods of time without replacement. It is adapted to withstand high fluid pressures without injury and will 9 seal the space about the member effectively,

1 either under high or low pressures. The

other advantages of the invention will b obvious to those skilled in the art. I

What I claim as new anddesire to protect In holcing the packing in position so that I nally on opposite ends, a tapered seat within said sleeve, a sectional packing adapted to wedge in said seat and contract to engage said rod, a ring seated upon said packing, a coil spring urging saidring into engagement with said packing, a retaining ring screwed into said sleeve to adjustably compress said spring, and a'second sleeve arranged to be screwed into said first sleeve above said retaining ring.

3. In combination a reciprocating plunger, a barrel therefor made up of units, each comprising a tubular sleeve, a downwardly tapered seat therein spaced from said plunger, a sectional metallic packing ring in said seat and adapted to fit said plunger, :1 stop ring secured in said sleeve above said seat, a spring. between said packing ring and said stop ring, and means to-hold said packing resiliently on said plunger.

In testimony whereof I hereunto aflix my signature this 23rd day of July, A. D. 1925.

' GERALD R. LIVERGOOD.

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